US10377254B2 - Wireless power transmission device and vehicle - Google Patents

Wireless power transmission device and vehicle Download PDF

Info

Publication number
US10377254B2
US10377254B2 US14/858,200 US201514858200A US10377254B2 US 10377254 B2 US10377254 B2 US 10377254B2 US 201514858200 A US201514858200 A US 201514858200A US 10377254 B2 US10377254 B2 US 10377254B2
Authority
US
United States
Prior art keywords
power
vehicle
transmission device
supplying coil
power transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US14/858,200
Other versions
US20160009187A1 (en
Inventor
Motonao Niizuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to PCT/JP2013/063386 priority Critical patent/WO2014184864A1/en
Application filed by IHI Corp filed Critical IHI Corp
Assigned to IHI CORPORATION reassignment IHI CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NIIZUMA, MOTONAO
Publication of US20160009187A1 publication Critical patent/US20160009187A1/en
Application granted granted Critical
Publication of US10377254B2 publication Critical patent/US10377254B2/en
Application status is Active legal-status Critical
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12Inductive energy transfer
    • B60L11/182
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12Inductive energy transfer
    • B60L53/124Detection or removal of foreign bodies
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14Inductive couplings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J5/00Circuit arrangements for transfer of electric power between ac networks and dc networks
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/022Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter
    • H02J7/025Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter using non-contact coupling, e.g. inductive, capacitive
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7005Batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/12Electric charging stations
    • Y02T90/122Electric charging stations by inductive energy transmission
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/14Plug-in electric vehicles

Abstract

A wireless power transmission device includes a power-supplying coil configured to wirelessly transmit power to an electric vehicle (EV) serving as a vehicle, be installed in a slanted state or perpendicularly to a horizontal plane, and form an electromagnetic coupling circuit along with a power-receiving coil provided in the EV.

Description

This application is a continuation application based on a PCT Patent Application No. PCT/JP2013/063386 filed on May 14, 2013. The content of the PCT application is incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to a wireless power transmission device capable of wirelessly transmit power and a vehicle capable of receiving the power transmitted from the wireless power transmission device.

BACKGROUND ART

In recent years, the number of vehicles including an electric motor with an internal combustion engine or instead of the internal combustion engine as a power generation source has increased so as to realize a low carbon society. An electric vehicle (EV) is a representative vehicle including the motor instead of the engine and a hybrid vehicle (HV) is a vehicle including the motor with the engine. Such a vehicle includes a rechargeable storage battery (for example, a secondary battery such as a lithium ion battery or a nickel-metal hydride battery) configured to supply power for driving the motor, and is configured so that the storage battery can be charged with electric power supplied from an external power supply device.

For a currently commercialized EV or HV (or more precisely, a plug-in hybrid vehicle), power for charging the storage battery is mostly transmitted via a cable connecting a power supply device and a vehicle. In recent years, a method of wirelessly transmit power for charging the storage battery to the vehicle has been proposed. In order to wirelessly transmit power efficiently, it is necessary to appropriately set a relative positional relationship between a power-supplying coil provided in the power supply device and a power-receiving coil provided in the vehicle.

When a metallic foreign object intrudes between the power-supplying coil of the power supply device and the power-receiving coil of the vehicle, a problem such as degradation of transmission efficiency due to the influence of the metallic foreign object is likely to occur. A substance moved by the wind such as an aluminum foil is also considered as the aforementioned metallic foreign object, and the metallic foreign object is also likely to intrude between the power-supplying coil and the power-receiving coil while power is wirelessly transmitted. The following Patent Document 1 discloses technology for disposing a partition wall surrounding a space between the power-supplying coil of the power supply device and the power-receiving coil of the vehicle and preventing the foreign object from intruding while the vehicle is stopped.

DOCUMENT OF RELATED ART Patent Document

[Patent Document 1]

Japanese Unexamined Patent Application, First Publication No. 2010-226946

SUMMARY Technical Problem

In the technology disclosed in the above-described Patent Document 1, the intrusion of the metallic foreign object may be considered to be prevented because the space between the power-supplying coil of the power supply device and the power-receiving coil of the vehicle is surrounded by a partition wall while the vehicle is stopped in an area in which power transmission can be performed. However, when the metallic foreign object intrudes into the space to be surrounded by the partition wall before the vehicle is stopped in the area in which the power transmission can be performed, a problem in power transmission is likely to occur that the metallic foreign object remains in the space surrounded by the partition wall when the vehicle moves to the area in which the power transmission can be performed.

The present disclosure is conceived in view of the above-described circumstances, and an object of the present disclosure is to provide a wireless power transmission device capable of constantly performing efficient wireless power transmission by preventing a metallic foreign object from remaining between a power-supplying coil and a power-receiving coil, and a vehicle capable of receiving power transmitted from the wireless power transmission device.

Solution to Problem

In order to achieve the above-described object, according to the first aspect of a wireless power transmission device of the present disclosure, a wireless power transmission device to wirelessly transmit power to a vehicle may include: a power-supplying coil installed in a slanted state or perpendicularly to a horizontal plane and configured to form an electromagnetic coupling circuit along with a power-receiving coil provided in the vehicle.

In the first aspect of the wireless power transmission device of the present disclosure, the power-supplying coil may be provided in a plate-like container having at least one surface on which a fluororesin coating film is formed.

Alternatively, in the first aspect of a wireless power transmission device of the present disclosure, the power-supplying coil may be provided in a plate-like container having at least one surface on which a large number of micro projections are formed.

Alternatively, in the first aspect of the wireless power transmission device of the present disclosure, the power-supplying coil may be provided in a plate-like container having at least one surface on which a large number of grooves extending in a slanted direction are formed.

In the first aspect of the wireless power transmission device of the present disclosure, the power-supplying coil may be installed in a state in which at least an upper end portion projects from an installation surface, in a place into which entry of the vehicle is inhibited by a vehicle stopper.

In the first aspect of the wireless power transmission device of the present disclosure, the power-supplying coil may be installed at a stopping position at which the vehicle should stop, in a state in which the entire power-supplying coil is embedded below an installation surface.

According to the first aspect of a vehicle of the present disclosure, a vehicle configured to receive power wirelessly transmitted from the outside may include: a power-receiving coil configured to face the power-supplying coil provided in any wireless power transmission device described above and form the electromagnetic coupling circuit along with the power-supplying coil.

Alternatively, according to the second aspect of a vehicle of the present disclosure, a vehicle configured to receive power wirelessly transmitted from the outside may include: a power-receiving coil provided in a bottom of the vehicle and configured to form the electromagnetic coupling circuit along with the power-supplying coil provided in any of the wireless power transmission devices described above.

Effects of the Disclosure

According to the present disclosure, because a power-supplying coil configured to form an electromagnetic coupling circuit along with a power-receiving coil provided in an EV that is a power supply target to which power should be supplied is installed in a slanted state or perpendicularly to a horizontal plane, a metallic foreign object on an upper surface of the power-supplying coil slides down due to gravity. Thereby, it is possible to constantly perform efficient wireless power transmission by preventing a metallic foreign object from remaining between a power-supplying coil and a power-receiving coil.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing main part configurations and a positional relationship of a wireless power transmission device and a vehicle according to the first embodiment of the present disclosure.

FIG. 2 is a diagram showing main part configurations and a positional relationship of the wireless power transmission device and the vehicle according to the first embodiment of the present disclosure.

FIG. 3A is a perspective view of a power-supplying coil provided in the wireless power transmission device according to the first embodiment of the present disclosure.

FIG. 3B is a perspective view of the power-supplying coil provided in the wireless power transmission device according to the first embodiment of the present disclosure.

FIG. 3C is a perspective view of the power-supplying coil provided in the wireless power transmission device according to the first embodiment of the present disclosure.

FIG. 4 is a diagram showing main part configurations and a positional relationship of a wireless power transmission device and a vehicle according to the second embodiment of the present disclosure.

DESCRIPTION OF EMBODIMENTS

Hereinafter, a wireless power transmission device and a vehicle according to embodiments of the present disclosure will be described in detail with reference to the drawings. Hereinafter, an example in which the vehicle is an EV using only an electric motor as a power generation source will be described.

[First Embodiment]

FIGS. 1 and 2 are diagrams showing main part configurations and a positional relationship of a wireless power transmission device and a vehicle according to the first embodiment of the present disclosure. FIG. 1 is a diagram when the wireless power transmission device and the vehicle are viewed from the side and FIG. 2 is a diagram when the wireless power transmission device and the vehicle are viewed from the back.

As shown in FIGS. 1 and 2, the wireless power transmission device 1 of this embodiment, for example, is installed in a road surface (installation surface) of a parking place and when an EV 2 serving as the vehicle which travels on the road surface is stopped at a predefined positional relationship (a relative position where an electromagnetic coupling circuit to be described below is formed), it is possible to wirelessly transmit electric power to the EV 2 (power with which a storage battery 23 is charged). The wireless power transmission device 1 includes a power supply device 11, a power-supplying circuit 12, and a power-supplying coil 13.

The power supply device 11 is a power supply configured to supply electric power necessary to generate power to be transmitted to the EV 2, for example, a power supply configured to supply a three-phase alternating current (AC) power having a voltage of 200 [V]. The power supply device 11 is not limited to the three-phase AC power, and may be a power supply configured to supply single-phase AC power such as a commercial AC power supply.

The power-supplying circuit 12 wirelessly supplies the power supplied from the power supply device 11 to the EV 2 via an electromagnetic coupling circuit formed by the power-supplying coil 13 and a power-receiving coil 21 provided in the EV 2. Specifically, the power-supplying circuit 12 rectifies the power (AC power) supplied from the power supply device 11 into direct current (DC) power, converts the DC power into AC power suitable for wireless power transmission and supplies the AC power to the power-supplying coil 13, thereby realizing wireless power transmission to the EV 2.

It is also possible to use a DC power supply such as a fuel battery or a solar battery as the power supply device 11. In this case, rectification in the power-supplying circuit 12 can be omitted.

The power-supplying coil 13 is installed on the road surface and is a coil configured to wirelessly supply AC power supplied from the power-supplying circuit 12 to the EV 2. The above-described electromagnetic coupling circuit is formed by disposing the power-supplying coil 13 and the power-receiving coil 21 provided in the EV 2 in close proximity to each other. The electromagnetic coupling circuit refers to a circuit configured to perform wireless power supply from the power-supplying coil 13 to the power-receiving coil 21 by electromagnetically coupling the power-supplying coil 13 and the power-receiving coil 21, and may be any one of a circuit configured to perform power supply in an “electromagnetic induction scheme” and a circuit configured to perform power supply in an “magnetic field resonance scheme.”

The power-supplying coil 13, for example, is slanted relative to a horizontal plane inside a groove G formed in a road surface of the parking place and an upper end portion of the power-supplying coil 13 is installed to project from the groove G in the road surface. The groove G is formed in a place in which entry of the EV 2 is inhibited by a vehicle stopper ST provided on the road surface of the parking place. The power-supplying coil 13 is installed in the slanted state relative to the horizontal plane so as to prevent transmission efficiency of the power from being degraded by enabling a metallic foreign object on an upper surface of the power-supplying coil 13 to slide down due to gravity. A slanted angle of the power-supplying coil 13 relative to the horizontal plane is determined according to the power transmission efficiency and the effect of enabling the metallic foreign object to slide down, and it is preferable that the slanted angle be, for example, about 45 to 60 degrees.

The power-supplying coil 13 is installed in a state in which the upper end portion of the power-supplying coil 13 is projected from the groove G in the road surface so as to increase the power transmission efficiency for the EV 2. If the power-supplying coil 13 has been installed to be entirely stored inside the groove G, a side wall of the groove G is positioned between the power-supplying coil 13 and the power-receiving coil 21 of the EV 2 as the power-supplying coil 13 is installed in the slanted state, so that the power transmission efficiency is degraded. In order to prevent the above-described degradation of power transmission efficiency, the power-supplying coil 13 is disposed in a state in which the upper end portion of the power-supplying coil 13 is projected from the groove G in the road surface.

Because the power-supplying coil 13 is disposed in a state in which the upper end portion of the power-supplying coil 13 is projected above the road surface, the power-supplying coil 13 is installed inside the groove G formed in a place in which the entry of the EV 2 is inhibited by the vehicle stopper ST. Although the power-supplying coil 13 is disposed in a state in which only the upper end portion of the power-supplying coil 13 is projected above the road surface in the examples of FIGS. 1 and 2, the power-supplying coil 13 may be disposed to be entirely positioned above the road surface if it is necessary to increase the power transmission efficiency.

FIGS. 3A, 3B, and 3C are perspective views of a power-supplying coil provided in the wireless power transmission device according to the first embodiment of the present disclosure. As shown in FIGS. 3A, 3B, and 3C, the power-supplying coil 13 is provided in a plate-like container of which a plan-view shape is a rectangle. Because the power-supplying coil 13 is installed in the slanted state relative to the horizontal plane, as described above, so that a metallic foreign object on an upper surface of the power-supplying coil 13 slides down due to gravity, the upper surface of the container including the power-supplying coil 13 is processed so that the metallic foreign object slides easily.

In the example shown in FIG. 3A, a fluororesin coating film 13 a is formed on the upper surface of the container including the power-supplying coil 13. Because the slipperiness of the upper surface of the container is improved by forming the fluororesin coating film 13 a, the metallic foreign object slides more easily. Because the fluororesin coating film 13 a has a non-adhesive property, a foreign object other than metallic foreign object is also less likely to adhere thereto. Thus, it is possible to prevent a situation in which the sliding down of a metallic foreign object is impeded due to the adherence of a foreign object other than the metallic foreign object on the upper surface of the container.

In the example shown in FIG. 3B, a large number of micro projections 13 b are formed on the upper surface of the container including the power-supplying coil 13. In FIG. 3B, for convenience of illustration, the micro projections 13 b are enlarged and shown. The micro projections 13 b, for example, are hemispherical micro projections, and a metallic foreign object slides easily as the frictional force is reduced, because the contact area between the upper surface of the container and the metallic foreign object is reduced. The micro projections 13 b are not limited to hemispherical shapes, and may be of any shape as long as the slipperiness of the upper surface of the container is improved.

In the example shown in FIG. 3C, a large number of grooves 13 c extending in a slanted direction are formed in the upper surface of the container including the power-supplying coil 13. In FIG. 3C, for convenience of illustration, the grooves 13 c are enlarged and shown. The groove 13 c serves as a guide for downwardly guiding the metallic foreign object on the upper surface of the container. As the grooves 13 c are provided, even when a force in an intersecting direction of the groove 13 c is applied, for example, to the metallic foreign object on the upper surface of the container, a force in a direction along the groove 13 c is generated according to the function of the groove 13 c and the metallic foreign object slides easily down.

As shown in FIGS. 1 and 2, the EV 2 serving as the vehicle includes a power-receiving coil 21, a power-receiving circuit 22, and a storage battery 23. The power-receiving coil 21 is a coil provided in a rear bottom of the EV 2 and configured to wirelessly receive power (AC power) supplied from the power-supplying coil 13 provided in the wireless power transmission device 1. The power-receiving coil 21 is in close proximity to the power-supplying coil 13 of the wireless power transmission device 1, so that the above-described electromagnetic coupling circuit is formed.

Similar to the power-supplying coil 13 provided in the wireless power transmission device 1, the power-receiving coil 21 is provided in the rear bottom of the EV 2 in the slanted state relative to the horizontal plane. This is because the power transmission efficiency increases by causing the power-receiving coil 21 to face the power-supplying coil 13 when the EV 2 has been stopped in a defined state (a state in which each of the rear wheels of the EV 2 has abutted the vehicle stopper ST) as shown in FIGS. 1 and 2. When the power-receiving coil 21 faces the power-supplying coil 13, the power-receiving coil 21 and the power-supplying coil 13 are parallel or are substantially parallel.

The power-receiving circuit 22 receives power (AC power) wirelessly supplied via the electromagnetic coupling circuit formed by the power-supplying coil 13 of the wireless power transmission device 1 and the power-receiving coil 21, and converts the received power into DC power. The storage battery 23 is a rechargeable storage battery (for example, a secondary battery such as a lithium ion battery or a nickel-metal hydride battery) mounted in the EV 2, and supplies power for driving a motor (not shown) mounted in the EV 2.

A charger configured to supply an appropriate voltage/current to the secondary battery according to a charged state may be embedded in or added to the storage battery 23.

Next, operations of the wireless power transmission device 1 and the EV 2 in the above-described configuration will be briefly described. First, the driver moves back the EV 2 until each of the rear wheels of the EV 2 abuts the vehicle stopper ST and stops the EV 2. Thereby, as shown in FIGS. 1 and 2, the power-supplying coil 13 of the wireless power transmission device 1 and the power-receiving coil 21 of the EV 2 face to form the electromagnetic coupling circuit.

Next, the wireless power transmission device 1 determines whether the EV 2 is within an area in which power transmission can be performed and starts to transmit power by operating the power-supplying circuit 12 when it is determined that the EV 2 is within the area in which the power transmission can be performed. Then, when the driver issues a charging instruction to the EV 2 in a state in which the EV 2 is stopped, charging for the storage battery 23 is started. Specifically, when a control device (not shown) provided in the EV 2 operates the power-receiving circuit 22, power (AC power) wirelessly transmitted from the wireless power transmission device 1 to the EV 2 via the electromagnetic coupling circuit formed by the power-supplying coil 13 and the power-receiving coil 21 is received by the power-receiving circuit 22. The AC power received by the power-receiving circuit 22 is converted into DC power and the storage battery 23 is charged with a DC current thereof.

As an example of the method in which the wireless power transmission device 1 determines whether the EV 2 is within the area in which the power transmission can be performed, it is possible to determine that the EV 2 is within the area in which the power transmission can be performed when a load sensor embedded in the vehicle stopper ST detects the load after each of the rear wheels of the EV 2 abuts the vehicle stopper ST.

Regardless of whether the EV 2 stops in the above-described defined state (the state in which each of the rear wheels of the EV 2 abuts the vehicle stopper ST), the metallic foreign object on the upper surface of the power-supplying coil 13 of the wireless power transmission device 1 slides down due to gravity and drops to the bottom of the groove G. Thereby, it is possible to perform efficient wireless power transmission by preventing a metallic foreign object from remaining between the power-supplying coil 13 and the power-receiving coil 21.

As described above, because the power-supplying coil 13 of the wireless power transmission device 1 is installed in the slanted state relative to the horizontal plane in this embodiment, the metallic foreign object on the upper surface of the power-supplying coil 13 slides down due to gravity. Thereby, the metallic foreign object is prevented from remaining between the power-supplying coil and the power-receiving coil and efficient wireless power transmission is constantly performed.

[Second Embodiment]

FIG. 4 is a diagram showing main part configurations and a positional relationship of a wireless power transmission device and a vehicle according to the second embodiment of the present disclosure. FIG. 4 is a diagram when the wireless power transmission device and the vehicle are viewed from the side. As shown in FIG. 4, the wireless power transmission device 1 of this embodiment has a position of a power-supplying coil 13 different from that of the first embodiment and an EV 2 of this embodiment has a position of a power-receiving coil 21 different from that of the first embodiment.

That is, the power-supplying coil 13 provided in the wireless power transmission device 1 is installed in a state in which the entire power-supplying coil 13 has been embedded below the road surface at a stopping position at which the EV 2 should stop. Specifically, the power-supplying coil 13 is installed to be slanted relative to a horizontal plane inside a groove G formed in front of a vehicle stopper ST (at the stopping position at which the EV 2 should stop) and entirely stored inside the groove G. As in the first embodiment, the power-supplying coil 13 is installed in the slanted state relative to the horizontal plane so as to prevent transmission efficiency of the power from being degraded by enabling a metallic foreign object on an upper surface of the power-supplying coil 13 to slide down due to gravity. The power-supplying coil 13 is installed to be entirely stored inside the groove G so as to prevent a collision with a wheel of the EV 2.

The power-receiving coil 21 provided in the EV 2 is provided in the bottom of the EV 2 so that the power-receiving coil 21 is horizontal or substantially horizontal when the EV 2 is positioned on the horizontal plane. Specifically, when the EV 2 has stopped in the defined state (the state in which each of the rear wheels of the EV 2 abuts the vehicle stopper ST) as shown in FIG. 4, the power-receiving coil 21 is attached to a portion positioned above the power-supplying coil 13. Thereby, it is possible to reduce the space necessary for the installation of the power-receiving coil 21.

Even when the EV 2 has stopped in the defined state (the state in which each of the rear wheels of the EV 2 abuts the vehicle stopper ST) as shown in FIG. 4 in this embodiment, the power-receiving coil 21 does not face the power-supplying coil 13, and the power-receiving coil 21 and the power-supplying coil 13 are not parallel or substantially parallel. Thus, although the power transmission efficiency is degraded as compared with when the power-receiving coil 21 faces the power-supplying coil 13, it is possible to wirelessly transmit power at a certain degree of efficiency because the electromagnetic coupling circuit is formed by the power-supplying coil 13 and the power-receiving coil 21.

When the electromagnetic coupling circuit formed by the power-supplying coil 13 and the power-receiving coil 21 is a circuit configured to supply power in the “magnetic field resonance scheme,” it is possible to perform highly efficient power transmission even when the power-receiving coil 21 does not face the power-supplying coil 13. Thus, in this embodiment, it is desirable to form an electromagnetic circuit configured to supply power in the “magnetic field resonance scheme” through the power-receiving coil 21 and the power-supplying coil 13.

As described above, because the power-supplying coil 13 of the wireless power transmission device 1 is installed in the slanted state relative to the horizontal plane even in this embodiment, the metallic foreign object on the upper surface of the power-supplying coil 13 will slide down due to gravity. Thereby, it is possible to constantly perform efficient wireless power transmission by preventing a metallic foreign object from remaining between a power-supplying coil and a power-receiving coil.

Although the wireless power transmission device and the vehicle according to the embodiment of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be freely modified without departing from the scope of the present disclosure. For example, although an example in which the power-supplying coil 13 of the wireless power transmission device 1 is installed in the slanted state relative to the horizontal plane has been described in the above-described embodiment, the power-supplying coil 13 may be installed perpendicularly to the horizontal plane.

The fluororesin coating film 13 a, a large number of micro projections 13 b, or a large number of grooves 13 c described using FIGS. 3A, 3B, and 3C may be formed on the bottom surface as well as the upper surface of the container including the power-supplying coil 13. Thereby, when the power-supplying coil 13 is installed, it can be installed regardless of which surface of the container to face upward.

The plan-view shape of the container in which the power-supplying coil 13 is provided is not limited to rectangular and may be, for example, oval.

Although an example in which a power supply target is an EV equipped with a storage battery has been described in the above-described embodiment, the present disclosure is also applicable to a plug-in HV and a carrier vehicle. Further, the present disclosure is applicable to an unmanned vehicle.

INDUSTRIAL APPLICABILITY

A wireless power transmission device capable of constantly performing efficient wireless power transmission by preventing a metallic foreign object from remaining between a power-supplying coil and a power-receiving coil is provided.

Claims (13)

The invention claimed is:
1. A wireless power transmission device to wirelessly transmit power to a vehicle, the wireless power transmission device comprising:
a power-supplying coil installed in a slanted state or perpendicularly to a horizontal plane inside a groove formed in a road surface where the vehicle travels and configured to form an electromagnetic coupling circuit along with a power-receiving coil provided in the vehicle.
2. The wireless power transmission device according to claim 1, wherein the power-supplying coil is provided in a plate-like container having at least one surface on which a fluororesin coating film is formed.
3. The wireless power transmission device according to claim 1, wherein the power-supplying coil is provided in a plate-like container having at least one surface on which a large number of micro projections are formed.
4. The wireless power transmission device according to claim 1, wherein the power-supplying coil is provided in a plate-like container having at least one surface on which a large number of grooves extending in a slanted direction are formed.
5. The wireless power transmission device according to claim 1, wherein the power-supplying coil is installed in a state in which at least an upper end portion projects from an installation surface, in a place into which entry of the vehicle is inhibited by a vehicle stopper.
6. The wireless power transmission device according to claim 1, the power-supplying coil is installed at a stopping position at which the vehicle should stop, in a state in which the entire power-supplying coil is embedded below an installation surface.
7. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:
a power-receiving coil configured to face the power-supplying coil provided in the wireless power transmission device according to claim 1 and form the electromagnetic coupling circuit along with the power-supplying coil.
8. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:
a power-receiving coil provided in a bottom of the vehicle and configured to form the electromagnetic coupling circuit along with the power-supplying coil provided in the wireless power transmission device according to claim 1.
9. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:
a power-receiving coil configured to face the power-supplying coil provided in the wireless power transmission device according to claim 5 and form the electromagnetic coupling circuit along with the power-supplying coil.
10. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:
a power-receiving coil configured to face the power-supplying coil provided in the wireless power transmission device according to claim 6 and form the electromagnetic coupling circuit along with the power-supplying coil.
11. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:
a power-receiving coil provided in a bottom of the vehicle and configured to form the electromagnetic coupling circuit along with the power-supplying coil provided in the wireless power transmission device according to claim 5.
12. A vehicle configured to receive power wirelessly transmitted from the outside, the vehicle comprising:
a power-receiving coil provided in a bottom of the vehicle and configured to form the electromagnetic coupling circuit along with the power-supplying coil provided in the wireless power transmission device according to claim 6.
13. The wireless power transmission device according to claim 1, wherein the groove has an opening.
US14/858,200 2013-05-14 2015-09-18 Wireless power transmission device and vehicle Active 2034-12-07 US10377254B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/063386 WO2014184864A1 (en) 2013-05-14 2013-05-14 Contactless power transmission device and moving vehicle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/063386 Continuation WO2014184864A1 (en) 2013-05-14 2013-05-14 Contactless power transmission device and moving vehicle

Publications (2)

Publication Number Publication Date
US20160009187A1 US20160009187A1 (en) 2016-01-14
US10377254B2 true US10377254B2 (en) 2019-08-13

Family

ID=51897885

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/858,200 Active 2034-12-07 US10377254B2 (en) 2013-05-14 2015-09-18 Wireless power transmission device and vehicle

Country Status (3)

Country Link
US (1) US10377254B2 (en)
CN (1) CN105144538A (en)
WO (1) WO2014184864A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014184864A1 (en) * 2013-05-14 2014-11-20 株式会社Ihi Contactless power transmission device and moving vehicle
KR20160075079A (en) * 2014-12-19 2016-06-29 삼성전자주식회사 Electronic device for controlling other elcectronic device and method for controlling other elcectronic device
US10291071B2 (en) * 2016-01-19 2019-05-14 The United States Of America As Represented By The Secretary Of The Navy Wireless power and data transfer for unmanned vehicles
US10399449B2 (en) * 2016-08-08 2019-09-03 Hyundai Motor Company Wireless charging control apparatus and method for optimal charging by adjusting the inclination of the electric vehicle being charged
US20180091381A1 (en) * 2016-09-24 2018-03-29 Apple Inc. Generating Suggestions For Scenes And Triggers
US9818007B1 (en) * 2016-12-12 2017-11-14 Filip Bajovic Electronic care and content clothing label

Citations (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505787A (en) * 1993-02-01 1996-04-09 Total Service Co., Inc. Method for cleaning surface of external wall of building
JPH0917667A (en) 1995-06-28 1997-01-17 Toyota Autom Loom Works Ltd Coupler for battery charger
US5703461A (en) * 1995-06-28 1997-12-30 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Inductive coupler for electric vehicle charger
JPH1028332A (en) 1996-07-11 1998-01-27 Sumitomo Electric Ind Ltd Battery charger for electric automobile
JPH10172823A (en) * 1996-12-11 1998-06-26 Totoku Electric Co Ltd Fluororesin insulating coil and its manufacture, and fluororesin insulating electric wire and its manufacture
JP2001128392A (en) 1999-10-29 2001-05-11 Sharp Corp Non contact power transmitting apparatus
JP2001196832A (en) * 2000-01-17 2001-07-19 Matsushita Electric Ind Co Ltd Horn antenna
JP2002015852A (en) * 2000-06-30 2002-01-18 Totoku Electric Co Ltd Electromagnetic heating coil
US20040066346A1 (en) * 2002-06-06 2004-04-08 Huor Ou Hok Slot array antenna
US20100074723A1 (en) * 2008-08-21 2010-03-25 Lancon Donnie M Cargo Container
US20100146308A1 (en) 2008-09-26 2010-06-10 Richard Gioscia Portable power supply device for mobile computing devices
US20100235006A1 (en) 2009-03-12 2010-09-16 Wendell Brown Method and Apparatus for Automatic Charging of an Electrically Powered Vehicle
JP2010226946A (en) 2009-02-25 2010-10-07 Maspro Denkoh Corp Power supply system for moving body
US20110043414A1 (en) * 2009-08-20 2011-02-24 Spencer Webb Directional planar log-spiral slot antenna
US20110067960A1 (en) * 2008-06-04 2011-03-24 Mec Co., Ltd Wheel Stop Made Of Metal Pipe And Capable Of Transmitting Power To Electric Car While Being Parked
JP2011125153A (en) 2009-12-11 2011-06-23 Equos Research Co Ltd Non-contacting power transmission system and non-contacting power transmission device
CN102118069A (en) 2009-12-31 2011-07-06 上海汽车集团股份有限公司 High-efficiency non-contact charging system and vehicle charged by same
WO2011106506A2 (en) 2010-02-25 2011-09-01 Evatran Llc Method and apparatus for inductively transferring ac power between a charging unit and a vehicle
US20110243697A1 (en) * 2010-04-06 2011-10-06 Gregory Lee Braun Apparatus and Method for Transferring Freight
JP2011234514A (en) 2010-04-28 2011-11-17 Kddi Corp Charging device
US20110285349A1 (en) * 2010-05-19 2011-11-24 Qualcomm Incorporated Adaptive wireless energy transfer system
JP2012120288A (en) 2010-11-30 2012-06-21 Hitachi Ltd Impedance matching method of non-contact power supply device, and non-contact power supply device using same
US20120161537A1 (en) 2010-12-24 2012-06-28 Semiconductor Energy Laboratory Co., Ltd. Power feeding device and contactless power feeding system provided with power feeding device
US20120255279A1 (en) * 2011-04-11 2012-10-11 GM Global Technology Operations LLC System and method for solar-powered control of exhaust after-treatment systems
US20120318586A1 (en) * 2010-03-04 2012-12-20 Honda Motor Co., Ltd. Electric vehicle
US20130015699A1 (en) 2011-07-14 2013-01-17 Sony Corporation Power supply apparatus, power supply system, vehicle, and electronic apparatus
US20130063082A1 (en) * 2011-09-08 2013-03-14 Samsung Electronics Co., Ltd. Wireless power receiver and control method thereof
US8441450B2 (en) * 2008-09-30 2013-05-14 Apple Inc. Movable track pad with added functionality
JP2013115915A (en) 2011-11-28 2013-06-10 Ihi Corp Non-contact power transmission apparatus and mobile vehicle
US20140064770A1 (en) * 2012-08-28 2014-03-06 Ricoh Company, Ltd. Optical sensor unit and image forming apparatus incorporating same
US20140071547A1 (en) * 2012-09-12 2014-03-13 Premier Systems Usa, Inc. Removable optical devices for mobile electronic devices
US20140070764A1 (en) * 2012-09-11 2014-03-13 Qualcomm Incorporated Wireless power transfer system coil arrangements and method of operation
US20140155269A1 (en) * 2012-06-11 2014-06-05 Fujikura Ltd. Oxide superconductor wire and superconducting coil
US20140174870A1 (en) * 2011-09-16 2014-06-26 Motonao Niizuma Vehicle electric power supply system
US20150061583A1 (en) * 2012-04-05 2015-03-05 Kojima Press Industry Co., Ltd. Vehicle
US20150128362A1 (en) * 2012-07-27 2015-05-14 Ihi Corporation Foreign matter removal mechanism
US20150137801A1 (en) * 2011-08-05 2015-05-21 Evatran Group, Inc. Method and apparatus for aligning a vehicle with an inductive charging system
US20150214751A1 (en) * 2012-10-09 2015-07-30 Ihi Corporation Wireless power supplying apparatus
US20150246620A1 (en) * 2012-09-27 2015-09-03 Tdk Corporation Vehicle and mobile body system
US20150278038A1 (en) * 2014-03-26 2015-10-01 Qualcomm Incorporated Systems, methods, and apparatus related to wireless charging management
US20150357828A1 (en) * 2013-02-14 2015-12-10 Toyota Jidosha Kabushiki Kaisha Power receiving device and power transmitting device
US20150372493A1 (en) * 2014-06-18 2015-12-24 WIPQTUS Inc. Wireless power system for portable devices under rotational misalignment
US20160009187A1 (en) * 2013-05-14 2016-01-14 Ihi Corporation Wireless power transmission device and vehicle
US20160052408A1 (en) * 2013-04-12 2016-02-25 Nissan Motor Co., Ltd. Contactless power supply system
US20160159233A1 (en) * 2013-07-23 2016-06-09 Hyunmin KIM Apparatus for transmitting wireless power for electric car
US20160236574A1 (en) * 2013-09-27 2016-08-18 Nissan Motor Co., Ltd. Vehicle mounting structure of contactless power reception device
US20160339791A1 (en) * 2015-05-20 2016-11-24 Lawrence Yong Hock Sim Autonomous charging for electric vehicles
US20160363679A1 (en) * 2014-02-12 2016-12-15 Cgg Services Sa Cableless seismic sensors and methods for recharging
US20170043668A1 (en) * 2014-05-19 2017-02-16 Tdk Corporation Wireless power supply system and wireless power transmission system
US9643505B2 (en) * 2013-04-26 2017-05-09 Toyota Jidosha Kabushiki Kaisha Power receiving device, power transmitting device, power transfer system, and parking assisting device
US20170136898A1 (en) * 2014-06-25 2017-05-18 Elix Wireless Charging Systems Inc. Methods and apparatus for automatic alignment of wireless power transfer systems
US9694685B2 (en) * 2015-11-13 2017-07-04 NextEv USA, Inc. Electric vehicle charging device obstacle avoidance and warning system and method of use
US20170207658A1 (en) * 2016-01-19 2017-07-20 The United States Of America As Represented By The Secretary Of The Navy Wireless Power and Data Transfer for Unmanned Vehicles
US20170264102A1 (en) * 2012-10-01 2017-09-14 Ihi Corporation Wireless power-supplying system
US9859955B2 (en) * 2012-08-24 2018-01-02 Qualcomm Incorporated System and method for power output control in wireless power transfer systems
US9866752B2 (en) * 2015-06-02 2018-01-09 Qualcomm Incorporated Systems and methods for producing a combined view from fisheye cameras
US9876535B2 (en) * 2013-02-21 2018-01-23 Qualcomm Incorporated Modular inductive power transfer power supply and method of operation
US9889754B2 (en) * 2014-09-09 2018-02-13 Qualcomm Incorporated System and method for reducing leakage flux in wireless electric vehicle charging systems
US9923406B2 (en) * 2015-09-04 2018-03-20 Qualcomm Incorporated System and method for reducing leakage flux in wireless charging systems
US9921045B2 (en) * 2013-10-22 2018-03-20 Qualcomm Incorporated Systems, methods, and apparatus for increased foreign object detection loop array sensitivity
US9925886B2 (en) * 2013-07-15 2018-03-27 Qualcomm Incorporated Systems, methods, and apparatus related to mutual detection and identification of electric vehicle and charging station
US9931952B2 (en) * 2012-06-27 2018-04-03 Qualcomm Incorporated Electric vehicle wireless charging with monitoring of duration of charging operational mode
US9941708B2 (en) * 2014-11-05 2018-04-10 Qualcomm Incorporated Systems, methods, and apparatus for integrated tuning capacitors in charging coil structure
US9971353B2 (en) * 2012-07-03 2018-05-15 Qualcomm Incorporated Systems, methods, and apparatus related to electric vehicle parking and wireless charging
US9972434B2 (en) * 2012-03-20 2018-05-15 Qualcomm Incorporated Magnetically permeable structures
US9969282B2 (en) * 2016-03-25 2018-05-15 Qualcomm Incorporated Systems and methods for thermal management in wireless power transfer
US9983300B2 (en) * 2014-10-17 2018-05-29 Qualcomm Incorporated Systems, methods, and apparatus for living object protection in wireless power transfer applications

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5589909B2 (en) * 2011-03-14 2014-09-17 株式会社リコー Display device, display device event switching control method, and program

Patent Citations (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505787A (en) * 1993-02-01 1996-04-09 Total Service Co., Inc. Method for cleaning surface of external wall of building
JPH0917667A (en) 1995-06-28 1997-01-17 Toyota Autom Loom Works Ltd Coupler for battery charger
US5703461A (en) * 1995-06-28 1997-12-30 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Inductive coupler for electric vehicle charger
JPH1028332A (en) 1996-07-11 1998-01-27 Sumitomo Electric Ind Ltd Battery charger for electric automobile
JPH10172823A (en) * 1996-12-11 1998-06-26 Totoku Electric Co Ltd Fluororesin insulating coil and its manufacture, and fluororesin insulating electric wire and its manufacture
JP2001128392A (en) 1999-10-29 2001-05-11 Sharp Corp Non contact power transmitting apparatus
JP2001196832A (en) * 2000-01-17 2001-07-19 Matsushita Electric Ind Co Ltd Horn antenna
JP2002015852A (en) * 2000-06-30 2002-01-18 Totoku Electric Co Ltd Electromagnetic heating coil
US20040066346A1 (en) * 2002-06-06 2004-04-08 Huor Ou Hok Slot array antenna
US20110067960A1 (en) * 2008-06-04 2011-03-24 Mec Co., Ltd Wheel Stop Made Of Metal Pipe And Capable Of Transmitting Power To Electric Car While Being Parked
US20100074723A1 (en) * 2008-08-21 2010-03-25 Lancon Donnie M Cargo Container
US20100146308A1 (en) 2008-09-26 2010-06-10 Richard Gioscia Portable power supply device for mobile computing devices
US8441450B2 (en) * 2008-09-30 2013-05-14 Apple Inc. Movable track pad with added functionality
JP2010226946A (en) 2009-02-25 2010-10-07 Maspro Denkoh Corp Power supply system for moving body
US20100235006A1 (en) 2009-03-12 2010-09-16 Wendell Brown Method and Apparatus for Automatic Charging of an Electrically Powered Vehicle
US20110043414A1 (en) * 2009-08-20 2011-02-24 Spencer Webb Directional planar log-spiral slot antenna
JP2011125153A (en) 2009-12-11 2011-06-23 Equos Research Co Ltd Non-contacting power transmission system and non-contacting power transmission device
CN102118069A (en) 2009-12-31 2011-07-06 上海汽车集团股份有限公司 High-efficiency non-contact charging system and vehicle charged by same
WO2011106506A2 (en) 2010-02-25 2011-09-01 Evatran Llc Method and apparatus for inductively transferring ac power between a charging unit and a vehicle
US20120318586A1 (en) * 2010-03-04 2012-12-20 Honda Motor Co., Ltd. Electric vehicle
US20110243697A1 (en) * 2010-04-06 2011-10-06 Gregory Lee Braun Apparatus and Method for Transferring Freight
JP2011234514A (en) 2010-04-28 2011-11-17 Kddi Corp Charging device
US20110285349A1 (en) * 2010-05-19 2011-11-24 Qualcomm Incorporated Adaptive wireless energy transfer system
JP2012120288A (en) 2010-11-30 2012-06-21 Hitachi Ltd Impedance matching method of non-contact power supply device, and non-contact power supply device using same
US8981599B2 (en) 2010-12-24 2015-03-17 Semiconductor Energy Laboratory Co., Ltd. Power feeding device and contactless power feeding system provided with power feeding device
US20120161537A1 (en) 2010-12-24 2012-06-28 Semiconductor Energy Laboratory Co., Ltd. Power feeding device and contactless power feeding system provided with power feeding device
CN102570627A (en) 2010-12-24 2012-07-11 株式会社半导体能源研究所 Power feeding device and contactless power feeding system provided with power feeding device
US20150123488A1 (en) 2010-12-24 2015-05-07 Semiconductor Energy Laboratory Co., Ltd. Power feeding device and contactless power feeding system provided with power feeding device
US20120255279A1 (en) * 2011-04-11 2012-10-11 GM Global Technology Operations LLC System and method for solar-powered control of exhaust after-treatment systems
JP2013021886A (en) 2011-07-14 2013-01-31 Sony Corp Power supply apparatus, power supply system, vehicle, and electronic apparatus
US20130015699A1 (en) 2011-07-14 2013-01-17 Sony Corporation Power supply apparatus, power supply system, vehicle, and electronic apparatus
US20150137801A1 (en) * 2011-08-05 2015-05-21 Evatran Group, Inc. Method and apparatus for aligning a vehicle with an inductive charging system
US20130063082A1 (en) * 2011-09-08 2013-03-14 Samsung Electronics Co., Ltd. Wireless power receiver and control method thereof
US20140174870A1 (en) * 2011-09-16 2014-06-26 Motonao Niizuma Vehicle electric power supply system
JP2013115915A (en) 2011-11-28 2013-06-10 Ihi Corp Non-contact power transmission apparatus and mobile vehicle
US9972434B2 (en) * 2012-03-20 2018-05-15 Qualcomm Incorporated Magnetically permeable structures
US20150061583A1 (en) * 2012-04-05 2015-03-05 Kojima Press Industry Co., Ltd. Vehicle
US20140155269A1 (en) * 2012-06-11 2014-06-05 Fujikura Ltd. Oxide superconductor wire and superconducting coil
US9931952B2 (en) * 2012-06-27 2018-04-03 Qualcomm Incorporated Electric vehicle wireless charging with monitoring of duration of charging operational mode
US9971353B2 (en) * 2012-07-03 2018-05-15 Qualcomm Incorporated Systems, methods, and apparatus related to electric vehicle parking and wireless charging
US20150128362A1 (en) * 2012-07-27 2015-05-14 Ihi Corporation Foreign matter removal mechanism
US9859955B2 (en) * 2012-08-24 2018-01-02 Qualcomm Incorporated System and method for power output control in wireless power transfer systems
US20140064770A1 (en) * 2012-08-28 2014-03-06 Ricoh Company, Ltd. Optical sensor unit and image forming apparatus incorporating same
US20140070764A1 (en) * 2012-09-11 2014-03-13 Qualcomm Incorporated Wireless power transfer system coil arrangements and method of operation
US20140071547A1 (en) * 2012-09-12 2014-03-13 Premier Systems Usa, Inc. Removable optical devices for mobile electronic devices
US20150246620A1 (en) * 2012-09-27 2015-09-03 Tdk Corporation Vehicle and mobile body system
US20170264102A1 (en) * 2012-10-01 2017-09-14 Ihi Corporation Wireless power-supplying system
US20150214751A1 (en) * 2012-10-09 2015-07-30 Ihi Corporation Wireless power supplying apparatus
US20150357828A1 (en) * 2013-02-14 2015-12-10 Toyota Jidosha Kabushiki Kaisha Power receiving device and power transmitting device
US9876535B2 (en) * 2013-02-21 2018-01-23 Qualcomm Incorporated Modular inductive power transfer power supply and method of operation
US20160052408A1 (en) * 2013-04-12 2016-02-25 Nissan Motor Co., Ltd. Contactless power supply system
US9643505B2 (en) * 2013-04-26 2017-05-09 Toyota Jidosha Kabushiki Kaisha Power receiving device, power transmitting device, power transfer system, and parking assisting device
US20160009187A1 (en) * 2013-05-14 2016-01-14 Ihi Corporation Wireless power transmission device and vehicle
US9925886B2 (en) * 2013-07-15 2018-03-27 Qualcomm Incorporated Systems, methods, and apparatus related to mutual detection and identification of electric vehicle and charging station
US20160159233A1 (en) * 2013-07-23 2016-06-09 Hyunmin KIM Apparatus for transmitting wireless power for electric car
US9827864B2 (en) * 2013-09-27 2017-11-28 Nissan Motor Co., Ltd. Vehicle mounting structure of contactless power reception device
US20160236574A1 (en) * 2013-09-27 2016-08-18 Nissan Motor Co., Ltd. Vehicle mounting structure of contactless power reception device
US9921045B2 (en) * 2013-10-22 2018-03-20 Qualcomm Incorporated Systems, methods, and apparatus for increased foreign object detection loop array sensitivity
US20160363679A1 (en) * 2014-02-12 2016-12-15 Cgg Services Sa Cableless seismic sensors and methods for recharging
US20150278038A1 (en) * 2014-03-26 2015-10-01 Qualcomm Incorporated Systems, methods, and apparatus related to wireless charging management
US20170043668A1 (en) * 2014-05-19 2017-02-16 Tdk Corporation Wireless power supply system and wireless power transmission system
US20150372493A1 (en) * 2014-06-18 2015-12-24 WIPQTUS Inc. Wireless power system for portable devices under rotational misalignment
US20170136898A1 (en) * 2014-06-25 2017-05-18 Elix Wireless Charging Systems Inc. Methods and apparatus for automatic alignment of wireless power transfer systems
US9889754B2 (en) * 2014-09-09 2018-02-13 Qualcomm Incorporated System and method for reducing leakage flux in wireless electric vehicle charging systems
US9983300B2 (en) * 2014-10-17 2018-05-29 Qualcomm Incorporated Systems, methods, and apparatus for living object protection in wireless power transfer applications
US9941708B2 (en) * 2014-11-05 2018-04-10 Qualcomm Incorporated Systems, methods, and apparatus for integrated tuning capacitors in charging coil structure
US20160339791A1 (en) * 2015-05-20 2016-11-24 Lawrence Yong Hock Sim Autonomous charging for electric vehicles
US9866752B2 (en) * 2015-06-02 2018-01-09 Qualcomm Incorporated Systems and methods for producing a combined view from fisheye cameras
US9923406B2 (en) * 2015-09-04 2018-03-20 Qualcomm Incorporated System and method for reducing leakage flux in wireless charging systems
US9694685B2 (en) * 2015-11-13 2017-07-04 NextEv USA, Inc. Electric vehicle charging device obstacle avoidance and warning system and method of use
US20170207658A1 (en) * 2016-01-19 2017-07-20 The United States Of America As Represented By The Secretary Of The Navy Wireless Power and Data Transfer for Unmanned Vehicles
US9969282B2 (en) * 2016-03-25 2018-05-15 Qualcomm Incorporated Systems and methods for thermal management in wireless power transfer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
International Search Report, PCT/JP2013/063386, dated Aug. 13, 2013, 2 pgs.
Japanese Office Action with English concise explanation, Japanese Patent Application No. 2011-259501, dated Jun. 30, 2015, 8 pgs.

Also Published As

Publication number Publication date
WO2014184864A1 (en) 2014-11-20
CN105144538A (en) 2015-12-09
US20160009187A1 (en) 2016-01-14

Similar Documents

Publication Publication Date Title
US8395355B2 (en) Power supply system and vehicle with the system
JP5051257B2 (en) Vehicle
US9024575B2 (en) Electrical powered vehicle and power feeding device for vehicle
US8169183B2 (en) Electric power supply system and vehicle
US8427103B2 (en) Charging device for electric vehicle
WO2012042902A1 (en) Electricity supply system for electric automobile, and electric automobile and power supply device used in said system
EP2431214B1 (en) Vehicle charging unit
EP2058163B1 (en) Charging device for electric automobile
WO2010032309A1 (en) Noncontact power receiving device and vehicle equipped with it
US9050900B2 (en) Non-contact charging device
KR101185107B1 (en) Power feeding system for vehicle, electrically powered vehicle and power feeding apparatus for vehicle
JP2011101481A (en) Vehicular electric power unit
EP3127742A1 (en) Non-contact power reception device and vehicle including the same
JP2012249401A (en) Non-contact power supply device
KR101585117B1 (en) Rapid Charging Power Supply System
RU2561887C2 (en) Torsion torque control device and contactless charging system
EP2407338A1 (en) Electric vehicle
EP2436550A1 (en) Charging system, and method for controlling vehicle and charging system
WO2011001524A1 (en) Coil unit, noncontact power receiving device, noncontact power feeding device, noncontact power feeding system, and vehicle
JP4798087B2 (en) Electric power system and vehicle equipped with the same
US20130038715A1 (en) Parking assist device for vehicle and electrically powered vehicle including the same
WO2013077340A1 (en) Mobile vehicle and non-contact power transmission device
WO2011132272A1 (en) Vehicle parking assistance device and electric vehicle equipped with same
JP5083413B2 (en) Electric vehicle
JP5206879B2 (en) Power supply system for vehicle and control method thereof

Legal Events

Date Code Title Description
AS Assignment

Owner name: IHI CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NIIZUMA, MOTONAO;REEL/FRAME:036602/0470

Effective date: 20150914

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

STCF Information on status: patent grant

Free format text: PATENTED CASE